Just when I entered the room for the bossfight the screen went black for a few seconds.
Then there's speech about how we have to attack him but the guy is just lying there and the boss does nothing.
I've read that I can fix this by joining someone else who's a bit before the boss fight and fight the boss on his game.
So is anybody here on Heroic difficulty near that part in the game?
Or if you know another method to fix it....